package com.ly.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;

@Configuration
public class CorsConfig {
    private  static  final long MAX_AGE = 24*60*60;
    private CorsConfiguration buildConfig() {
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        corsConfiguration.addAllowedOrigin("*"); //1 设置访问源地址
        corsConfiguration.addAllowedHeader("*");  //2 设置访问源请求头
        corsConfiguration.addAllowedMethod("*");  //3 设置访问源请求方法
        corsConfiguration.setMaxAge(MAX_AGE);   //4 当前跨域请求最大有效时常
        return corsConfiguration;
    }
   @Bean
   public CorsFilter corsFilter(){
       UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
       source.registerCorsConfiguration("/**", buildConfig());
       return new CorsFilter(source);
   }
}
